XML 41 R3.htm IDEA: XBRL DOCUMENT v2.4.0.6
Consolidated Condensed Balance Sheets (Parenthetical) (USD $)
Jan. 31, 2012
Jul. 31, 2011
Jan. 31, 2011
Consolidated Condensed Balance Sheets [Abstract]      
Preferred stock, par value $ 0.01 $ 0.01 $ 0.01
Preferred stock, shares authorized 25,000,000 25,000,000 25,000,000
Preferred stock, shares issued 0 0 0
Preferred stock, shares outstanding 0 0 0
Common stock, par value $ 0.01 $ 0.01 $ 0.01
Common stock, shares authorized 100,000,000 100,000,000 100,000,000
Common stock, shares issued 40,477,796 40,334,973 40,270,021
Treasury stock, shares 4,468,181 4,264,804 4,264,804